diff --git a/Cargo.toml b/Cargo.toml
index d6c89f5..7b6d83c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,8 +16,8 @@ unicode-normalization = "0.1.17"
 seqdiff = "0.3"
 
 [dev-dependencies]
-quickcheck = "0.9"
-quickcheck_macros = "0.9"
+quickcheck = "1"
+quickcheck_macros = "1"
 criterion = "0.3"
 
 [[bench]]
diff --git a/python/Cargo.toml b/python/Cargo.toml
index 3135280..757e29f 100644
--- a/python/Cargo.toml
+++ b/python/Cargo.toml
@@ -14,5 +14,5 @@ name = "tokenizations"
 crate-type = ["cdylib"]
 
 [dependencies.pyo3]
-version = "^0.14"
+version = "^0.16.5"
 features = ["extension-module"]